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US3563615A - Pressure balanced piston and the like - Google Patents

Pressure balanced piston and the like Download PDF

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Publication number
US3563615A
US3563615A US821264A US3563615DA US3563615A US 3563615 A US3563615 A US 3563615A US 821264 A US821264 A US 821264A US 3563615D A US3563615D A US 3563615DA US 3563615 A US3563615 A US 3563615A
Authority
US
United States
Prior art keywords
cylindrical member
space
shaft
pressure
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US821264A
Other languages
English (en)
Inventor
Eberhard Dobelin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digital Kienzle Computersysteme GmbH and Co KG
Original Assignee
Kienzle Apparate GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kienzle Apparate GmbH filed Critical Kienzle Apparate GmbH
Application granted granted Critical
Publication of US3563615A publication Critical patent/US3563615A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement

Definitions

  • a journal portion of a shaft is inserted through an open slot in a support wall into an open bearing, and retained in the same by an arm which resiliently yields laternally during insertion of the shaft.
  • the journal portion is formed by a circular groove preventing axial displacement of the shaft in the open bearing, and the other end of the shaft is inserted in axial direction into a bearing bore in another support wall.
  • the longitudinally rigid arm blocks removal of the journal portion from the open bearing.
  • the present invention relates to the assembly of a shaft in bearings of support walls.
  • axle shafts and rotary shafts In the manufacture of instruments, it is usual to mount axle shafts and rotary shafts directly in bearing bores in thin support walls, which has not only the advantage of being inexpensive, but also facilitates replacement of the shaft, and reduces the time required for assembly.
  • the shaft is threaded through one bearing bore, then threaded through center bores in parts which have to be rotatably mounted on the shaft, and finally threaded through a bearing bore in another support wall, and then secured against axial movement. If the parts which are rotatably mounted on a shaft are of small diameter, it is sometimes possible to insert the shaft with the assembled part in a slanted position first into one and then into the other bearing bore.
  • the shaft bearing assemblies according to the prior art require several parts and a number of assembly operations in order to obtain proper bearing support of the shaft.
  • Another object of the invention is to mount a unit including a shaft and other parts rotatably mounted on the shaft, in bearings provided in two support walls between which the rotatable parts are located.
  • Another object of the invention is to insert the journal portion of a shaft into an open bearing while resiliently displacing a retaining abutment, so that the abutment 3,563,615 Patented Feb. 16, 1971 resiliently returning to its normal position holds the journal portion in the open hearing.
  • a reduced journal portion of a shaft is mounted in an open bearing in a support wall, and retained in the open bearing by retaining portions of the support wall.
  • the reduced journal portion and the annular groove have an axial length corresponding to the thickness of the support wall so that the shaft cannot be axially displaced when mounted in the open bearing.
  • a journal portion of the shaft is inserted through a narrow throat into an open bearing, and resiliently displaces a flexible arm which after insertion of the journal portion into the open bearing, returns to its normal position lo cated opposite the surface of the open bearing for retaining the journal portion in the open bearing.
  • the flexible retaining arm, as well as the journal portion of reduced diameter are provided, together with another retaining abutment on the other side of the throat, and the open bearing is axially aligned with a bearing bore in another support wall.
  • the shaft bearing assembly according to the invention is particularly suited for mounting non-rotatable shafts serving as axles for rotary parts, such as the number wheels of a register.
  • the shaft bearing assembly of the invention can also be used for rotary shafts, provided that the speed of rotation and the bearing loads are not too high.
  • the particular advantage of the invention resides in that the assembly of a shaft, or of a unit including a shaft and rotary parts thereon, can be securely mounted on support walls by a single assembly operation which can be carried out with one hand. Additional split rings and bushings are not required, which permits to reduce the total length of the shaft portions projecting from the support walls so that in some cases the mounting of the supporting means with the support walls and assembled unit into a housing is facilitated.
  • At least one support wall is formed with a cutout comprising an assembling portion in the form of a slot having a predetermined width and an outer end opening at one edge of the support wall, and an open bearing portion which has a predetermined diameter, namely the diameter of the journal portion of a shaft, which is preferably formed by a circular groove in an end portion of the shaft.
  • a resilient retaining arm forms one side of the assembling portion of the cutout and has an inner end formed as a retaining abutment located opposite the open side of the open bearing portion spaced the diameter of the journal portion from the opposite surface of the open bearing portion.
  • the retaining abutment is spaced from the other side of the assembling portion or slot, a distance less than the diameter of the journal portion so as to form a throat between the assembling portion or slot and the open bearing portion.
  • journal portion When a unit including a shaft having the journal portion is to be assembled, the journal portion is inserted through the throat While the resilient retaining arm resiliently yields, and when the journal portion is located in the open bearing, the resilient arm returns to its normal position in which its end portion forms part of the bearing and retains the journal portion of the shaft in the same.
  • FIG. 1 is a vertical sectional view illustrating a preferred embodiment of the invention.
  • FIG. 2 is a fragmentary perspective view illustrating two support walls constructed in accordance with the invention.
  • a supporting means includes a base plate 1, and two vertical and parallel support walls 2 and 3.
  • Base plate 1 has attaching lugs 4 and 5 provided with bores for attaching screws, not shown, by which the supporting means can be secured to a housing.
  • a shaft has an end portion 10a located in a bearing bore 2a of support wall 2, and a second end portion pro vided with a circular groove a forming a journal portion 15 having a reduced diameter.
  • Journal portion 15 of shaft 10 is mounted in an open bearing 14 which has a part-circular bearing surface 14a whose diameter is substantially the same as the diameter of the reduced journal portion 15.
  • Bearing bore 2a and the open bearing 14 are axially aligned to support shaft 10.
  • a counter or register 6 is rotatably mounted on shaft 10 and comprises an ordinal set of number wheels 7, and a first number wheel 8 to which the ratchet wheel 11 and a bevel gear 9 are fixedly secured for rotation.
  • the number wheel 8 of the unit order is driven from bevel gear 9, and a pawl, not shown, cooperates with ratchet wheel 11 to permit rotation of the number wheels only in one direction.
  • a hub portion of the number wheel of the highest order, and a hub portion of bevel gear 9 are spaced a small distance from the inner surfaces of support walls 2 and 3 so that only very limited axial displacement of the register is possible.
  • the open bearing 14 is part of a cutout 22 which includes an assembling portion or slot 13 communicating with the open bearing portion 14 through a throat 23 formed between a retaining projection 17 of edge 16 of assembling slot 13, and a retaining abutment 21 at the inner end of a flexible and resilient retaining arm of wall 3.
  • Cutout 22 further has a recess portion 19 on the side of the resilient arm 20 remote from the assembling slot 13.
  • Resilient arm 20 forms the other edge of the assembling slot 13.
  • a bearing formed by part-circular surface 14a of the open bearing 14 and by the retaining abutment 17, has the same diameter as journal portion 15.
  • the throat 23 has a width which is less than this diameter.
  • the remaining portion of the assembling slot 13 has a width which is greater than the diameter of the journal portion.
  • the face 21a of retaining abutment 21 abuts the edge 24 of recess 19 when it is displaced during insertion of the journal portion 15 through the throat 23.
  • the distance between the face 21a of abutment 21 and the edge 24 is selected so that the resilient arm 20 is stopped by edge 24 when the width of the throat 23 has been expanded to the Width or diameter of the journal portion 15, as will happen during insertion of the journal portion 15 through the assembling slot 13 and throat 23 into the open bearing 14.
  • the register 6 is first mounted on shaft 10 to form a unit with the same.
  • register 6 Since register 6 has an axial length which is almost the same as the distance between the inner faces of walls 2 and 3, it is not possible to insert the shaft end portion 10a into the bearing bore 2a in a slanted position of the unit.
  • the other end portion of shaft 10 is inserted through the assembling slot 13 until shaft 10 is almost parallel to the base plate 1, whereupon the unit with shaft 10 is axially shifted to insert shaft portion 10a into bearing bore 2a of support wall 2.
  • This axial displacement of shaft 10 places the reduced journal portion 15 in the plane of support wall 13 so that journal portion 15 can be pressed through the throat 23 while arm 20 resiliently yields until its face 21a abuts the edge 24 so that throat 23 has a width corresponding to the diameter of the journal portion 15.
  • journal portion 15 When journal portion 15 is located in the open bearing 14, the resilient arm 20 returns to its normal position and, due to its longitudinal rigidity, retains journal portion 15 in the open bearing 14, further aided by the retaining abutment 17 on the other side of throat 23. For removal of the journal portion, retaining arm must be manually laterally displaced.
  • journal portion and the circular groove 15a forming the same have an axial length corresponding to the thickness of support wall 3, shaft 10 cannot be axially shifted when journal portion 15 is located in the open bearing 14 due to the fact that the circular faces bounding circular recess 15a on the sides, now abut the opposite surfaces of support wall 3.
  • Shaft bearing assembly comprising, in combination, a unit including a shaft having a journal with a predetermined diameter; and supporting means including a support wall formed with a cutout comprising an assembling slot portion, a part-circular open bearing portion bounded by a part-circular edge portion of said support wall and being open toward said assembling slot portion between the ends of said part-circular edge portion, said partcircular edge portion having said predetermined diameter, and said journal being located in said bearing portion, said support wall including a laterally resilient longitudinally rigid retaining arm projecting toward said bearing portion and having on one side a lateral edge bounding one side of said assembling slot portion and having a normal position spaced from the other side of the same a distance less than said diameter of said journal so that said retaining arm is laterally resiliently displaced by said journal when the same is inserted through said assembling slot portion into said bearing portion whereupon said retaining arm returns resiliently to said normal position, said retaining arm having an end face spaced in said normal position from the opposite portion of said partcircular
  • said supporting means includes another support wall 6 spaced from said support wall, and having a bearing bore aligned with said part-circular bearing portion along a common axis; wherein said unit has said journal at one end, and another shaft portion at the other end turnably mounted in said bearing bore.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Braking Arrangements (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US821264A 1968-05-03 1969-05-02 Pressure balanced piston and the like Expired - Lifetime US3563615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681750449 DE1750449B1 (de) 1968-05-03 1968-05-03 Lagersicherung einer Welle oder Achse

Publications (1)

Publication Number Publication Date
US3563615A true US3563615A (en) 1971-02-16

Family

ID=5691823

Family Applications (1)

Application Number Title Priority Date Filing Date
US821264A Expired - Lifetime US3563615A (en) 1968-05-03 1969-05-02 Pressure balanced piston and the like

Country Status (5)

Country Link
US (1) US3563615A (de)
CH (1) CH489713A (de)
DE (1) DE1750449B1 (de)
FR (1) FR2007754A1 (de)
GB (1) GB1272612A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5044170U (de) * 1973-08-21 1975-05-02
JPS5441670U (de) * 1977-08-29 1979-03-20
US4527913A (en) * 1982-03-20 1985-07-09 Volkswagenwerk Ag Gear shift lever assembly
US4647229A (en) * 1985-09-24 1987-03-03 Lamcor, Inc. Shaft restraining device
US4842425A (en) * 1988-04-18 1989-06-27 Chrysler Motors Corporation Odometer shaft retainer and support
US5307902A (en) * 1993-03-24 1994-05-03 Dresser Industries, Inc. Gas meter counter unit with improved shaft lubrication

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494591B1 (fr) * 1980-11-27 1985-06-28 Salomon & Fils F Fixation de securite pour ski
US4591285A (en) * 1985-10-15 1986-05-27 Illinois Tool Works Inc. Rod retainer
DE102006028832A1 (de) * 2006-06-21 2007-12-27 Thyssenkrupp Presta Ag Vorrichtung zur Führung eines Körpers und Lenksäule für ein Kraftfahrzeug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR781459A (fr) * 1934-05-23 1935-05-16 Soupape d'échappement, pour moteurs à explosion et à combustion interne, refroidie par une circulation interne d'air, activée par le courant des gaz d'échappement
US2523358A (en) * 1945-10-22 1950-09-26 Guy O Conner Hydraulic antifriction die set
US2689626A (en) * 1949-09-16 1954-09-21 Hartford Nat Bank & Trust Co Device comprising bodies moving relatively to each other
US3001609A (en) * 1956-03-30 1961-09-26 Macks Elmer Fred Fluid supported device
US3127955A (en) * 1956-03-30 1964-04-07 Macks Elmer Fred Fluid supported device
US3479097A (en) * 1966-12-27 1969-11-18 Weyerhaeuser Co Fluid guide means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934414U (de) * 1965-06-11 1966-03-10 Telefunken Patent Anordnung zur lagerung einer welle.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR781459A (fr) * 1934-05-23 1935-05-16 Soupape d'échappement, pour moteurs à explosion et à combustion interne, refroidie par une circulation interne d'air, activée par le courant des gaz d'échappement
US2523358A (en) * 1945-10-22 1950-09-26 Guy O Conner Hydraulic antifriction die set
US2689626A (en) * 1949-09-16 1954-09-21 Hartford Nat Bank & Trust Co Device comprising bodies moving relatively to each other
US3001609A (en) * 1956-03-30 1961-09-26 Macks Elmer Fred Fluid supported device
US3127955A (en) * 1956-03-30 1964-04-07 Macks Elmer Fred Fluid supported device
US3479097A (en) * 1966-12-27 1969-11-18 Weyerhaeuser Co Fluid guide means

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5044170U (de) * 1973-08-21 1975-05-02
JPS5441670U (de) * 1977-08-29 1979-03-20
US4527913A (en) * 1982-03-20 1985-07-09 Volkswagenwerk Ag Gear shift lever assembly
US4647229A (en) * 1985-09-24 1987-03-03 Lamcor, Inc. Shaft restraining device
US4842425A (en) * 1988-04-18 1989-06-27 Chrysler Motors Corporation Odometer shaft retainer and support
US5307902A (en) * 1993-03-24 1994-05-03 Dresser Industries, Inc. Gas meter counter unit with improved shaft lubrication

Also Published As

Publication number Publication date
FR2007754A1 (de) 1970-01-09
GB1272612A (en) 1972-05-03
DE1750449B1 (de) 1970-11-26
CH489713A (de) 1970-04-30

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